A look back at the biggest year-end club hits over the chart's first 40 years.

Billboard is celebrating the first 40 years of the Dance Club Songs chart, which launched in 1976.

Madonna is the chart's No. 1 artist in that span, while countless moments (OK, we counted … 40, specifically) have highlighted the tally as dance has segued from disco to EDM with numerous styles in between.

Let's also look back at the top 10 songs annually on Dance Club Songs, as recapped in Billboard magazine and (later) online, from 1976 to 2015.

From something old (although timeless) to "Something New," here are the biggest hits, year-by-year, on each year-end Billboard Dance Club Songs chart.

HB: What was it like working with Jennifer Lopez on The Boy Next Door?

RG: She's another reason why I work so hard. There are people in my life who push me towards what I want a little bit harder. Just watching her put on so many different hats at once and do it effortlessly, and make everybody else in the world think it's easy to do-write a book, write a movie, produce a TV show, judge on another TV show, dance at her own concert-to do all of this at one time, [she makes it look] easy to do. For her to make it seem like it? That's poetry itself. Hopefully one day I can do the exact same thing. I can have many different hats on and make it feel effortless and still give the attention I need to all my loved ones and make it worthwhile. She's inspiration to the core.

HB: Do you still keep in touch?

RG: Oh yeah, of course. She's a sweetheart. She's helped me out, actually, quite a bit, when I had questions about certain things, because I'm new to this whole industry. She's come from humble beginnings, I come from humble beginnings, and I owe her a lot of credit.

So far back Sunday ... Lol on the set of the Jenny from the block video with Jennifer Lopez I'm holding up the fur so I don't get body bling on the white fur.... Fur on the beach !! One of the most beautiful women ever ❤️❤️❤️

HB: What was it like working with Jennifer Lopez on The Boy Next Door?

RG: She's another reason why I work so hard. There are people in my life who push me towards what I want a little bit harder. Just watching her put on so many different hats at once and do it effortlessly, and make everybody else in the world think it's easy to do-write a book, write a movie, produce a TV show, judge on another TV show, dance at her own concert-to do all of this at one time, [she makes it look] easy to do. For her to make it seem like it? That's poetry itself. Hopefully one day I can do the exact same thing. I can have many different hats on and make it feel effortless and still give the attention I need to all my loved ones and make it worthwhile. She's inspiration to the core.

HB: Do you still keep in touch?

RG: Oh yeah, of course. She's a sweetheart. She's helped me out, actually, quite a bit, when I had questions about certain things, because I'm new to this whole industry. She's come from humble beginnings, I come from humble beginnings, and I owe her a lot of credit.

E! news mentioned her debating if her stardom is fading away.. they arguing her starring is fading away.. Because she is doing all these live TV she has neglected her movie career but they also said she is on her way to becoming the simon cowel of live TV. They also said that JLO brand is so big that is hard for per say directors cast her in movies because she will always be JLO and that she might just be fine with that.

DominicanPapiBlaze wrote:E! news mentioned her debating if her stardom is fading away.. they arguing her starring is fading away.. Because she is doing all these live TV she has neglected her movie career but they also said she is on her way to becoming the simon cowel of live TV. They also said that JLO brand is so big that is hard for per say directors cast her in movies because she will always be JLO and that she might just be fine with that.

It's sad that she's not working more on the big screen but the great movie opportunities aren't there for her and that in over a decade, the 2 good roles she had during that time (El cantante & SOB) she had to produce them for herself, i wish she wasn't doing the dance show but her other TV work and the ones coming are really interesting and she's far from JLO there it's better to have that than wait for a movie that may never come. That said I hope she'll be able to get some good supporting roles here and there if it's with great directors.

DominicanPapiBlaze wrote:E! news mentioned her debating if her stardom is fading away.. they arguing her starring is fading away.. Because she is doing all these live TV she has neglected her movie career but they also said she is on her way to becoming the simon cowel of live TV. They also said that JLO brand is so big that is hard for per say directors cast her in movies because she will always be JLO and that she might just be fine with that.

E is on Mariah Carey's payroll, doesn't she have a reality TV show on their network,don't pay them Any mind

She was explaining why she never had success in the US. There was some field among Sony and some major radio stations back in the day and she was blacklisted in the US. Her singles wouldn't even be properly released there anymore. I guess that's why "Enough is Enough" was never released.

She was explaining why she never had success in the US. There was some field among Sony and some major radio stations back in the day and she was blacklisted in the US. Her singles wouldn't even be properly released there anymore. I guess that's why "Enough is Enough" was never released.